render/vulkan: make VK_KHR_external_semaphore_fd optional

We already block instead of using sync_file when the driver
doesn't support import/export.

render/vulkan/vulkan.c

@@ -462,7 +462,6 @@ struct wlr_vk_device *vulkan_device_create(struct wlr_vk_instance *ini,
 	const char *extensions[32] = {0};
 	size_t extensions_len = 0;
 	extensions[extensions_len++] = VK_KHR_EXTERNAL_MEMORY_FD_EXTENSION_NAME;
-	extensions[extensions_len++] = VK_KHR_EXTERNAL_SEMAPHORE_FD_EXTENSION_NAME;
 	extensions[extensions_len++] = VK_KHR_IMAGE_FORMAT_LIST_EXTENSION_NAME; // or vulkan 1.2
 	extensions[extensions_len++] = VK_EXT_EXTERNAL_MEMORY_DMA_BUF_EXTENSION_NAME;
 	extensions[extensions_len++] = VK_EXT_QUEUE_FAMILY_FOREIGN_EXTENSION_NAME;
@@ -497,6 +496,10 @@ struct wlr_vk_device *vulkan_device_create(struct wlr_vk_instance *ini,
 		assert(graphics_found);
 	}
 
+	bool exportable_semaphore = false, importable_semaphore = false;
+	bool has_external_semaphore_fd =
+		check_extension(avail_ext_props, avail_extc, VK_KHR_EXTERNAL_SEMAPHORE_FD_EXTENSION_NAME);
+	if (has_external_semaphore_fd) {
 		const VkPhysicalDeviceExternalSemaphoreInfo ext_semaphore_info = {
 			.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_EXTERNAL_SEMAPHORE_INFO,
 			.handleType = VK_EXTERNAL_SEMAPHORE_HANDLE_TYPE_SYNC_FD_BIT,
@@ -506,10 +509,12 @@ struct wlr_vk_device *vulkan_device_create(struct wlr_vk_instance *ini,
 		};
 		vkGetPhysicalDeviceExternalSemaphoreProperties(phdev,
 			&ext_semaphore_info, &ext_semaphore_props);
-	bool exportable_semaphore = ext_semaphore_props.externalSemaphoreFeatures &
+		exportable_semaphore = ext_semaphore_props.externalSemaphoreFeatures &
 			VK_EXTERNAL_SEMAPHORE_FEATURE_EXPORTABLE_BIT;
-	bool importable_semaphore = ext_semaphore_props.externalSemaphoreFeatures &
+		importable_semaphore = ext_semaphore_props.externalSemaphoreFeatures &
 			VK_EXTERNAL_SEMAPHORE_FEATURE_IMPORTABLE_BIT;
+		extensions[extensions_len++] = VK_KHR_EXTERNAL_SEMAPHORE_FD_EXTENSION_NAME;
+	}
 	if (!exportable_semaphore) {
 		wlr_log(WLR_DEBUG, "VkSemaphore is not exportable to a sync_file");
 	}
@@ -617,9 +622,12 @@ struct wlr_vk_device *vulkan_device_create(struct wlr_vk_instance *ini,
 	load_device_proc(dev, "vkWaitSemaphoresKHR", &dev->api.vkWaitSemaphoresKHR);
 	load_device_proc(dev, "vkGetSemaphoreCounterValueKHR",
 		&dev->api.vkGetSemaphoreCounterValueKHR);
+	load_device_proc(dev, "vkQueueSubmit2KHR", &dev->api.vkQueueSubmit2KHR);
+
+	if (has_external_semaphore_fd) {
 		load_device_proc(dev, "vkGetSemaphoreFdKHR", &dev->api.vkGetSemaphoreFdKHR);
 		load_device_proc(dev, "vkImportSemaphoreFdKHR", &dev->api.vkImportSemaphoreFdKHR);
-	load_device_proc(dev, "vkQueueSubmit2KHR", &dev->api.vkQueueSubmit2KHR);
+	}
 
 	size_t max_fmts;
 	const struct wlr_vk_format *fmts = vulkan_get_format_list(&max_fmts);